Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((ky sang) or (ky dang)) lap tai. hieu ve cam luc va tinh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky sang) OR (ky dang)) lap tai. hieu ve cam luc va tinh va cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ((ky sang) or (ky dang)) lap tai. hieu ve cam luc va tinh va cua te*.